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Bryant 558D User's Manual

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1. Fig 32 Filter Installed on Outdoor Air Hood 0 90 0 80 0 70 0 60 0 50 0 40 0 30 0 20 0 10 0 00 400 700 CFM Fig 33 PARABLADE Economizer Barometric Relief Damper Characteristics 100 200 300 500 600 800 PRE START UP A WARNING Failure to observe the following warn ings could result in serious personal injury 1 Follow recognized safety practices and wear pro tective goggles when checking or servicing refrig erant system 2 Donot operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured 3 Donot remove compressor terminal cover until all electrical sources have been disconnected 4 Relieve all pressure from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals 5 Never attempt to repair soldered connection while refrigerant system is under pressure 6 Do not use torch to remove any component Sys tem contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as follows a Relieve all pressure from system b Cut component conn
2. 30 TROUBLESHOOTING 32 35 START UP CHECKLIST CL 1 SAFETY CONSIDERATIONS Recognize safety information This is the safety alert sym bol A When you see this symbol on the unit and in in structions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert sym bol Danger identifies the most serious hazards which will result in severe personal injury or death Warning indicates a condition that could result in personal injury Caution is used to identify unsafe practices which would result in minor personal injury or produc and property damage Cancels 558D 36 4 558D 36 5 2 1 99 A WARNING Before performing service mainte nance operations on unit turn off main power switch to unit Electrical shock could cause personal injury 1 The power supply volts phase and hertz must corre spond to that specified on unit rating plate 2 The electrical supply provided by the utility must be suf ficient to handle load imposed by this unit 3 Refer to Locate the Unit section on page 3 and Fig 2 for locations of electrical inlets condensate drain duct con nections and required clearances before setting unit in place 4 This installation must conform with local building codes and with NEC National Electrical Code or NFPA National Fire Protection Ass
3. eni 097 e C 7 OAT Outdoor Air Thermostat NOTE See unit wiring diagram for details Fig 26 Wiring Connections for Outdoor Air Thermostat PRESSURE DROP in wg 0 70 0 50 0 80 0 60 0 40 0 30 0 20 0 10 0 00 100 200 300 400 500 600 700 800 CFM Fig 27 Durablade Economizer Barometric Relief Damper Characteristics d After installation is complete calculate the mini mum airflow across the economizer To calculate the minimum airflow the following data is needed total cfm cfm4 temperature of the total cfm temperature of the return air and tempera ture of the entering outside air T Cfm is the outside air cfm which will be the minimum airflow Insert the data into the following equations cms x cfm cfm cfm Therefore T4 T2 cfm _ T cfm NE Use this equation to determine cfm which is the minimum airflow across the economizer T4 T3 cfm T4 T4 If cfm does not match the desired minimum air flow from Step 1 readjust the minimum position setting screw Determine the enthalpy changeover set point from Fig 28 The enthalpy changeover set point should be set to return the outdoor air damper to the minimum position when enthalpy rises above the set point The settings areA B C and D Set the enthalpy changeover per the setting in Fig 29 Replace o
4. 5 Compressors areinternally spring mounted Do not loosen or remove compressor holddown bolts 6 Each unit system has 4 Schrader type gage ports one on the suction line one on the liquid line and two on the compressor discharge line Be sure that caps on the ports are tight Unit is now ready for initial start up START UP I HEATING SECTION START UP AND ADJUSTMENTS A CAUTION Complete the required procedures given in Pre Start U p section on this page before starting unit Do not jumper any safety devices when operating the unit A Checking Heating Control Operation Start and check theunit for proper heating control operation as follows 1 Turn on unit electrical supply 2 Se system switch selector at HEAT position and fan switch at AUTO or ON position Set heating temperature lever above room temperature 3 The evaporator fan will start immediately and electric heater will be energized 4 Check for heating operation by verifying that unit sup ply outlets are functional 5 The evaporator fan and heaters will turn off after ther mostat temperature is satisfied B Heating Sequence of Operation Room thermostat calls for heat closing circuit between R and W1 24 v control terminals Power to terminal R is supplied through the 24 v transformer which is internally protected against overload The 24 v power energizes the indoor evapo rator fan relay IFR The IFR closes normally open contacts 2 to 4
5. Field Wiring Connections 8 CONTROL BOX LOW VOLTAGE EVAPORATOR ACCESS PANEL ACCESS PANEL FAN ACCESS UNIT DISCONNECT NOT SHOWN END PANEL HIDDEN KNOCKOUT OPENING POWER WIRING POWER WIRING SIDE PANEL ACCESS PANEL FIELD CONTROL WIRING RACEWAY HIDDEN REFRIGERANT SERVICE FIL PORT ACCESS PANEL TER CONTROL BOX ACCESS PANEL SHOWN ACCESS PANEL CONDENSER COIL TOP COVER 0 5 n COMPRESSOR CONDENSER LEFT RIGHT COMPRESSOR COIL CORNER CORNER ACCESS PANEL POST POST NOT SHOWN CONTROL BOX CONDENSER COIL Fig 12 Typical Component Location CONDENSER FAN 200000000 9 x00 RACEWAY HIDDEN LOW VOLTAGE WIRING CONNECTION Fig 13 Low Voltage Location Transformer Circuit Breaker Fig 14 The unit transformer contains an automatic reset overcur rent protector for control circuit protection If this devicetrips it may reset without warning and start the heating or cooling section of this product U se caution when servicing If overcurrent protector continues to trip
6. TNT OPENING VERTICAL l CORNER 70 CONTROL BOX ACCESS PANEL 9 e 67 1 11 16 1872 29 5 16 7441 CONTROL BOX ACCESS PANEL EVAPORATOR FAN MOTOR amp BLOWER AND ELECTRIC HEAT ACCESS PANEL FORK LIFT SLOTS FRONT 2 144 DIA TYP 8 PLACES UNIT DURABLADE PARABLADE i5 Ks 365 1 558D060 558D072 470 STD UNIT ECONOMIZER WEIGHT CORNER WEIGHT WEIGHT te Ks te Ka ib Ks ss 54 4 vas 2 44 im 39 s is4 4 i91 ize se 90 408 wa 195 395 0 5 3 8 137 RIGHT SIDE 0 5 15 1381 0 3 3 16 CORNER 1 61 4 1 16 103 2 FILTER ACCESS PANEL THROWAWAY FILTERS 25 11 16 HOOD FILTER 652 5 1 2 335 6 A Pp HORIZONTAL OUTSIDE AIR 8 1 8 206 2 5 3 4 25 15 16 fs 11716 146 658 61 ETE OUTSIDE 2 SUPPLY AIR RETURN AIR F PANI ici RIGHT SIDE B STD CONDENSATE DRAIN CORNER WEIGHT CORNER WEIGHT CORNER WEIGHT C D Kg B tb Xs tb Ka A Fig 2 Base Unit Dimensions ac LOCATE THE UNIT A Clearance Maintain dearance around and above unit to provide mini mum distance from combustible materials proper airflow and Service access see Fig 2 and 3 Minimum clearance to combustibles is 0 in on all sides Minimum dea
7. 13 ECONOMIZER CONTROL BOARD BAROMETRIC RELIEF DAMPER ECONOMIZER PLUG ECONOMIZER MOTOR Fig 21 Horizontal Durablade Economizer Installation 90 Degree Rotation BLOCK OFF PLATE Fig 22 Horizontal Discharge Block Off Plate ECONOMIZER CONTROL ECONOMIZER ECONOMIZER TOP BOARD PLUG MOTOR SCREW a WIRING HARNESS BAROMETRIC e RELIEF DAMPER POSITION SETTING MOUNTING SCREWS BRACKET ECONOMIZER Fig 23 Durablade Economizer Installed in Unit NEGATIVE PRESSURE IN UNIT in wg 4 0 1234 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 OUTDOOR AIRFLOW cfm in 100 s Example Given Negative 0 2 in wg UTA OO TALE set ne Gace ake AE eo acl 900 cfm Determine Setting 5 in Fig 24 Durablade Economizer Minimum Position Setting Assembly 1 Determine if ventilation air is required in building If so determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed f
8. 460 v MCA and MOCP are based on 575 v NOTES In compliance with NEC requirements for multimotor and combination load equip ment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be fuse or HACR breaker 2 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percent of voltage imbalance AB 457 452 5v BC 464 457 27 v 457 455 22v Maximum deviation is 7 v Determine percent voltage imbalance 7 457 Voltage Imbalance 100 x 158 This amount of phase imbalance is satisfactory as it is below the maximum allow able 2 IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately D Accessory Installation At this time any required accessories should be installed on the unit Control wiring information is provided in the unit wiring diagram Refer to Accessory Installation Instructions provided with accessory E Optional Outdoor Air Damper Installation The outdoor air hood and screen are attached to the basepan at the bottom of the unit for shipping Assembly 1 OUTDOOR AIR OPENING PANEL SCREWS SIDE Determine quantity of ventilation required for building Record amount for use in Step 8 Remove filter access panel by raising panel and swing ing panel outward Pa
9. Dirty condenser coil Excessive head pressure Refrigerant overcharged Recover excess refrigerant E Recover refrigerant evacuate system and Air in system recharge Head pressure too low um oe Suction pressure too low m Increase air quantity Check filter and replace Temperature too low in conditioned area Reset thermostat Outdoor ambient below 25 F Install low ambient kit Evaporator fan will not shut off Time off delay not finished Wait for 30 second off delay Sizes 036 060 only Compressor makes excessive P Reverse the 3 phase power leads as noise 558D072 scroll only Compressor rotating in wring direction described in Start Up section page 17 Air in system 32 Table 20 Durablade Economizer Troubleshooting PROBLEM CAUSE REMEDY Damper does not Indoor evaporator fan is off 1 Check to ensure that 24 vac is present at terminal C1 on the IFC or that open 24 vac is present at the IFO terminal Check whether 24 vac is present at PL6 1 red wire and or PL6 3 black wire If 24 vac is not present check wiring see unit label diagram 2 Check proper thermostat connection to G on the connection board No power to economizer Check that SW3 is properly making contact with the damper blade Check motor that SW1 is in the NC normally closed position Check diode D18 If diode is not functioning properly replace D18 Confirm that the economizer control
10. gt Uu 30 OUTDOOR TEMP F C 1115 46 105 41 95 35 85 29 75 24 18 13 40 50 SUCTION LINE TEMPERATURE F 1 T 4 16 SUCTION LINE TEMPERATURE CC Fig 40 Cooling Charging Chart 558D036 689 621 NJ 483 414 A N N D SUCTION LINE PRESSURE KILOPASCALS 207 100 m OUTDOOR TEMP ep 125 52 90 115 46 105 41 95 35 28957 85 29 e g 75 24 170 65 18 D 55 13 amp 60 45 7 2 2 Z50 e a 40 30 30 40 50 60 70 80 SUCTION LINE TEMPERATURE 1 4 10 16 21 27 SUCTION LINE TEMPERATURE C Fig 41 Cooling Charging Chart 558D048 31 ToUTDOOR TEMP gt 125 115 46 105 41 95 35 85 29 75 65 552 483 J o 55 45 ui o SUCTION LINE PRESSURE PSIG d SUCTION LINE PRESSURE KILOPASCALS A x 30 40 50 60 SUCTION LINE TEMPERATURE F 1 4 10 16 21 27 SUCTION LINE TEMPERATURE C o Ep PSIC o NI o SUCTION LINE PRESSUR SUCTION LINE PRESSUR
11. 9 phase motor Table 5 558D036 Air Delivery Vertical Discharge Units Standard Motor STANDARD DIRECT DRIVE MOTOR AIRFLOW Low Speed High Speed Cim 230 460 575v 230 460 575 v 0 69 0 63 0 58 0 53 0 47 0 43 0 39 LEGEND ESP External Static Pressure in wg NOTES 1 Values include losses for filters unit casing and wet coils 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional in formation on motor performance refer to Table 4 3 Use of a field supplied motor may affect wire sizing Contact your distributor to verify 4 To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 63 20 Table 6 558D036 Air Delivery Vertical Discharge Units Alternate Motor ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg o2 os 4 oe or 08 Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg nu MN Watts Rpm Watts Watts Rpm Watts NOTES 1 Boldface indicates a fi
12. CHECK PULLEY ALIGNMENT AND BELT TENSION REFER TO INSTALLATION INSTRUCTIONS L2 L3 13 411 L2 L3 L2 L3 DB DB WB PSIG PSIG VERIFY REFRIGERANT CHARGE USING COOLING CHARGING CHARTS ON PAGE 31 VERIFY THAT 3 PHASE SCROLL COMPRESSOR IS ROTATING IN CORRECT DIRECTION 558D072 ONLY CL 1 CATALOG NO 5355 802 CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE
13. bhp Motor efficiency 74 Table 11 558 072 Air Delivery Vertical Discharge Units Standard Motor STANDARD BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cin aa Oe pm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm wans Rpm Watts 1442 2180 1420 2180 1481 2369 1396 2171 1460 2369 1521 2571 NOTES 1 Boldface indicates field supplied drive required See Note 7 indicates field supplied motor and drive are required indicates maximum usable watts of a factory supplied motor Maximum usable watts input is 2120 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Use of a field supplied motor may affect wire sizing Contact your distributor to verify Standard motor drive range 1070 to 1460 All other roms require field supplied drive To convert watts to bhp watts input x motor efficiency 746 bhp Motor efficiency 84 23 Table 12 5580036 Air De
14. there is a problem in the low voltage electrical circuit i e electrical short ground or transformer overload Disconnect power correct the con dition and check for normal unit operation A CAUTION TRANSFORMER CONTAINS AUTO RESET OVERCURRENT PROTECTOR IT MAY RESET WITHOUT WARNING STARTING HEATING OR COOLING SECTION OF THIS PRODUCT DISCONNECT POWER PRIOR TO SERVICING THIS COMPARTMENT MUST BE CLOSED EXCEPT WHEN SERVICING 316056 201 REV A Fig 14 Transformer Label Table 2 Electrical Data uNT NOMINAL orm ieu ELECTRIC HEAT POWER SUPPLY DISCONNECT D V PH H ioi in Mex RLA LRA FLA FLA Nominal kW MOCPp FLA LRA 15 9A 8 3 23 8 27 3 31 4 36 2 37 9 43 8 47 1 54 6 Ey dem 102 102 15 9 18 3 102 102 23 5 27 1 102 102 31 4 36 3 102 102 37 9 43 8 0 102 102 46 9 54 2 i 102 102 9 2 10 6 13 6 15 6 18 1 20 9 21 9 25 3 33 5 38 6 208 230 1 60 i 036 208 230 3 60 3T 3 4 9 2 10 6 9 6 13 6 15 6 5 8 18 1 20 9 9 10 21 9 25 3 4 16 33 5 38 6 B a 10 gt 02 RET ee om Pe 34 0 34 128 128 j 15 9 18 3 34 0 34 128 128 31 4 36 3 43 6 49 128 128 46 9 54 2 63 0 72 128 128 POEM E E 254 233 118 0 1 4 129 129 A 15 9 18 3 129 129 3 31 4 36 3 129 129 i F 46 9 54 2 70 80tt 129 129 k 62 8 72 5 90 10011 129 1
15. 13 1 87 7 16 0334 01 6 BOLT HEADS ALL CORNERS 1 47 7 4 9 16 115 5 f SUPPLY AIR 11 BOLT HEADS 7 167 Fig 4 Roof Curb HEAD OF BOLT TO BE ON INSIDE OF FLANGE GASKET SUPPLIED WITH CURB DUCT FIELD SUPPLIED 3 0 15 16 19381 SEE VIEW B gt UNIT Y NAIL TYPICAL 51085 00 1 4 7 COUNTER FLASHING FIELD SUPPLIED ROOFING FELT FIELD SUPPLIED CANT STRIP FIELD SUPPLIED ROOF ING MATERIAL FIELD SUPPLIED SECTION C C SCALE 1 4 Y OPENING FOR BASEPAN ENTRY SERVICE RIGID INSULATION 2 FIELD SUPPLIED 1831 1831 SEE NOTE 2 5 7 1 8 1705 NOTE CAMBRIDGEPORT SURE LOCK CORNER FASTENING DEVICE IS ACCEPTABLE ALTERNATE CONSTRUCTION Table 1 Specifications BASE UNIT 558D 02 a dp ol cu 5 _ NOMINAL CAPACITY tons OPERATING WEIGHT Ib Unit Durablade Economizer PARABLADE Economizer 4 Roof Curb COMPRESSOR TYPE Quantity Oil oz REFRIGERANT TYPE Operating Charge Ib oz 6 2 Reciprocating 3 5 5 42 42 Reciprocating Reciprocating Scroll 1 1 1 0 50 54 R 22 8 7 0 7 11 CONDENSER COIL Rows Fins in Total Face Area sq ft CONDENSER FAN Nominal Cfm Quantity Diameter in Motor Hp Rpm Watts Input Total EVAPORATOR COIL Rows Fins in Total Face Area sq ft EVAPORATOR
16. F indicates field supplied motor and drive are required indicates maximum usable watts of a factory supplied motor Maximum usable watts input is 2120 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Use of a field supplied motor may affect wire sizing Contact your distributor to verify Standard motor drive range 1070 to 1460 All other rpms require field supplied drive To convert watts to bhp watts input x motor efficiency 746 Motor efficiency 84 bhp B Belt Drive Motors Fan motor pulleys are factory set for speed shown in Table 1 To change fan speed 1 Shut off unit power supply 2 Loosen belt by loosening fan motor mounting nuts See Fig 34 3 Loosen movable pulley flange setscrew see Fig 35 4 Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed ncreas MOTOR MOUNTING ing fan speed increases load on motor Do not exceed maxi n NUTS AND BOLTS 9 mum speed specified in Table 1 5 Set movableflange at nearest keyway of pulley hub and tighten setscrew See
17. FAN Quantity Size in Type Drive Nominal Cfm Maximum Continuous Bhp Motor Frame Size Nominal Rpm High Low 860 800 Fan Rpm Range 760 1090 Ball 2100 Motor Bearing Type Maximum Allowable Rpm Motor Pulley Pitch Diameter Min Max in Nominal Motor Shaft Diameter in Fan Pulley Pitch Diameter in Belt Quantity Type Length in Pulley Center Line Distance in Speed Change per Full Turn of Movable Pulley Flange rpm Movable Pulley Maximum Full Turns From Closed Position Factory Setting Factory Speed Setting rpm Fan Shaft Diameter at Pulley in HIGH PRESSURE SWITCH psig t Standard Compressor Internal Relief Differential Cutout Reset Auto LOW ENESSURETOSS OF CHARGE SWITCH Liquid Line psig t utout Reset Auto FREEZE PROTECTION THERMOSTAT F t Opens Closes Enhanced Copper Tubes Aluminum Lanced Fins 1 17 m 10 42 4000 1 22 0 Y 1100 325 Centrifugal Type 0x10 1 11 x 10 1 10 x 10 Direct Belt 2000 48 1075 970 1075 970 900 1300 Ball 2100 840 1185 Ball 2100 450 50 428 320 3 22 7 2 17 10 42 Belt 2400 2 40 56 1070 1460 Ball 2100 2 8 3 8 45 1 A 40 14 7 15 5 80 500 50 428 320 2 30 5 45 5 OUTDOOR AIR INLET SCREENS Cleanable Quantity Size in 1 20 x 24 x 1 RETURN AIR FILTERS Throwaway Quantity Size in 2 16 25 x2 LEGEND Bhp Brake Horsepower Single phase units 1 3 bhp
18. affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Use of a field supplied motor may affect wire sizing Contact your distributor to verify Alternate motor drive range 840 to 1185 rpm All other roms require field supplied drive To convert watts to bhp bhp watts input x motor efficiency 746 PIN Motor efficiency 75 Table 9 5580060 Air Delivery Vertical Discharge Units Standard Motor STANDARD DIRECT DRIVE MOTOR AIRFLOW Low Speed Medium Speed High Speed Cfm 208 v 230 460 575 v 208 v 230 460 575 v 208 v 230 460 575 v ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts LEGEND ESP External Static Pressure in wg NOTES 1 Values include losses for filters unit casing and wet coils 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be af fected For additional information on motor performance refer to Table 4 3 Use of field supplied motor may affect wire sizing Contact your distributor to verify 4 To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 67 Table 10 558D060 Air Delivery Vertical Di
19. be used when reinstalling the equipment 1 10 11 12 13 14 To access 2 row coils remove screws securing condenser fan grilleto condenser coil top cover Place grille on top of condenser coil top cover as shown in Fig 36 It is not necessary to remove the top cover Remove3 screws on right side of compressor access panel Remove one screw securing condenser coil top cover to compressor access panel Remove lower screw secur ing condenser coil to compressor mounting plate See Fig 11 Remove4 screws securing control box access cover Re move 3 screws located in front of the control box ac cess cover securing condenser coil top cover Remove screws securing low voltage access panel Re move 2 screws inside the 24 v barrier access panel Tilt sheet metal located on left side of the 24 v connec tions back 45 degrees Remove screw securing refrigerant service port access panel Remove 2 U dips securing 2 row coils together at hair pin end Remove screws securing two corner posts Remove two corner posts Use right corner post to prop up right side of con denser coil top cover Slide condenser coil partially out of condenser fan housing See Fig 37 Use left corner post to prop up left side of condenser coil top cover Carefully separate the outer coil section to 4 in from the inner coil section See Fig 38 Use a water hose or other suitable equipment to flush down between the 2
20. board is grounded properly at PL6 4 brown wire and at brown terminal of the economizer control board brown wire The economizer motor must also be grounded properly at the negative motor terminal brown wire Verify SW1 and SW3 are working and wired properly see unit label diagram Check for 24 vac input at both PL6 1 red wire and PL6 3 black wire If 24 vac not present check unit wiring see unit label diagram If 24 vac is found in both places check for 24 vac at the yellow terminal of the econo mizer control board yellow wire If 24 vac power is not present replace the economizer control board Economizer motor failure If the indoor evaporator fan and economizer motor are energized verify that there is a minimum of 18 vdc at the positive motor terminal If the motor is not operating replace the motor Economizer op OAT or EC set too high 1 Set at correct temperature 3 F below indoor space temperature eration limited to 2 Check OAT or EC by setting above outdoor temperature or humidity level If minimum position the OAT or EC switches do not close replace OAT or EC Verify economizer control 1 Perform the following tests when OAT or EC is closed Y1 is called for and board is correctly wired and damper is at minimum position Confirm 24 vac on gray terminal of the works properly economizer control board gray wire If 24 vac is not present check wiring see unit label diagram 2 Verify that SW1 and SW3 ar
21. coil section to remove dirt and de bris Clean the outer surfaces with a stiff brush in the normal manner Secure inner and outer coil together with U clip Reposition the outer and inner coil section Reverse the procedure outlined above to reinstall equipment CONDENSER COIL TOP PANEL CORNER POST CONDENSER COIL Fig 37 Propping Up Condenser Coil Top Cover TOP VIEW TOP PANEL CENTER BAFFLE CONDENSER COIL INNER COIL SECTION OUTER COIL SECTION HAIRPIN END Fig 38 Separating Coil Sections Il LUBRICATION A Compressors Each compressor is charged with correct amount of oil at the factory B Fan Motor Bearings Fan motor bearings are of the permanently lubricated type No further lubrication is required lubrication of condenser or evaporator fan motors is required CONDENSER FAN ADJUSTMENT Fig 39 Shut off unit power supply Remove condenser fan assembly grille motor and fan and loosen fan hub setscrews Adjust fan height as shown in Fig 39 Tighten setscrews and re place condenser fan assembly 29 IV REFRIGERANT CHARGE Amount of refrigerant chargeis listed on unit nameplate also refer to Table 1 Unit panels must be in place when unit is operating during charging procedure This unit uses a fixed orifice refrigerant meter
22. fan will be energized and the position of the economizer damper will be deter mined by the suppl y air temperature When the second stage 18 of cooling is satisfied the compressor and OFM will be deen ergized The damper position will be determined by the supply air temperature When the first stage of cooling is satisfied there is a 30 second delay before the evaporator fan shuts off The damper then moves to the fully closed position When using a continous fan the damper moves to the minimum position Additional information on economizer operation is provided in the Ventilation Sequence section on page 27 Cooling Units With PARABLADE Economizer When the outdoor air is above the enthalpy control setting and theroom thermostat calls for cooling the compressor con tactor is energized to start the compressor and the outdoor condenser fan motor The indoor evaporator fan motor is energized and the economizer damper moves to the mini mum position After the room thermostat is satisfied the damper will spring return to the fully closed position When the outdoor air is below the enthalpy control setting and the thermostat calls for cooling the economizer outdoor air damper is opened proportionally to maintain between 50 and 56 F at the mixed air sensor If outside air alone cannot satisfy the cooling requirements economizer cooling is inte grated with mechanical cooling When the room thermostat is satisfied the d
23. not Sensor incorrectly wired or To verify sensor operation reconnect the lead of the outdoor enthalpy sensor open or close bad to the terminal of the economizer control module Connect DC milliammeter according to between terminals So of the economizer control module and terminals S of the enthalpy readings enthalpy sensor The milliammeter should indicate between 3 and 25 mA if the sensor is operating properly If the milliammeter indicates 0 the sensor may be wired backwards If any other readings are shown replace the sensor LED Light Emitting Diode 34 ft son o a0 SCHEMATIC 460 3 60 OPTION ONLY E 1m I STATIO OT CAP 2 TY 1 4 TON Lo le i 0 8 Ci 784 LU err ud c 1 om ase wmr l PET eue ade aca 225 BLU LEGEND Adjustable Heat Anticipator LSM Limit Switch Manual Reset Field Splice NOTES Contactor Compressor MTR Motor 1 If any of the original wire furnished must be replaced it must be CAP Capacitor OAT Outdoor Air Thermostat Marked Wi replaced with type 90 C wire or its equivalent Cooling Compensator OFM Outdoor Fan Motor 2 Three phase motors are protected under primary single phas COMP Compressor Motor PL Plug Assembly Terminal Marked ing cond
24. performance Curb should be level Unit leveling tolerances are shown in Fig 5 Correct leveling tolerance is necessary for unit drain to function properly C Slab Mount Horizontal Units Only Provide a level concrete slab that extends a minimum of 6 in beyond unit cabinet Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow NOTE Horizontal units may be installed on a roof curb if required Il UNIT DUCT CONNECTIONS On vertical units secure all ducts to roof curb and building structure Do not connect ductwork to unit On horizontal units duct flanges should be attached to horizontal openings and all ductwork should be secured to flanges If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applicable fire codes A minimum clearance is not required around ductwork Cabi net return air static shall not exceed 0 20 in wg with PARA BLADE economizer 0 35 in wg with Durablade economizer or 0 45 in wg without economizer NOTE Connection must be made to roof curb before unit is set in place Ill RIG AND PLACE UNIT Inspect unit for transportation damage File any daim with transportation agency Keep unit upright and do not drop Spreader bars are not required if top crating is left on unit Rollers may be used to move unit across a roof Level by us ing unit frame as a reference See
25. weights A CAUTION All panels must be in place when rigging Fig 6 Rigging Details 6 CAUTION DO NOT DRILL OR 50 18 5 INSERT SCREWS IN SHADED AREA SUPPLY RETURN CONDENSATE FACTORY INSTALLED DRAIN PLUG LOCATION Fig 7 Internal Trap Condensate Drain INLET OUTLET PANEL Fig 9 Location of Coil Area Not to be Drilled C Electrical Connections MINIMUM PITCH A WARNING The unit cabinet must have an uninter BAT rupted unbroken electrical ground to minimize the pos sibility of personal injury if an electrical fault should occur This ground may consist of electrical wire con nected to the unit ground lug in the control compart ment or conduit approved for electrical ground when SN installed in accordance with NEC ANSI American TO ROOF National Standards Institute NFPA latest edition in Canada Canadian Electrical Code CSA Canadian Standards Association C22 1 and local electrical codes Failure to adhere to this warning could result in per ORAN PLIG sonal injury NOTE Trap should be deep enough to offset maximum unit static dif ference A 4 in trap is recommended A CAUTION Failure to obey the following precau tions could result in damage to the unit being installed Fig 8 External Trap Condensate Drain Field Power Supply Fig 10 and 11 3 Useflexibletransition between rigid ductwork and unit 1 Makeall electrical connections in accordance
26. which energize the indoor evaporator fan contactor IFC and the electric heat contactor and start the indoor evapo rator fan motor IF M There is no time delay in the start up of the IFM When the call for heat is satisfied then the R to W1 circuit is opened and the IFR and IFC are deenergized Additional information on economizer operating in the heat ing only mode is provided in Ventilation Sequence section on page 27 C Limit Switches The heating limit switches LS are normally closed If the leaving air temperature exceeds the maximum allowable tem perature one of the limit switches will open breaking the power circuit to the heater This causes the heater to shut down immediately Check the air quantity to ensure there is sufficient airflow If unit does not energize reset the normally dosed manual limit switch LSM The LSM reset button is located on the fan housing and will only open in the event of a fan failure D Airflow and Temperature Rise The heating operation airflow must produce a temperature risethat falls within the approved cfm range 300 to 500 cfm per 12 000 Btuh cooling Refer to Indoor Airflow and Airflow Adjustments section on page 19 to adjust heating airflow where required E Safety Check of Limit Control A manual reset limit control is located on the evaporator fan The control shuts off the unit in the event of fan failure Il COOLING SECTION START UP AND ADJUSTMENTS A CAUTIO
27. with NEC to prevent transmission of vibration The transition may ANSI NFPA latest edition and local electrical codes gov be screwed or bolted to duct flanges Use suitable gas erning such wiring In Canada all electrical connec kets to ensure weather and airtight seal tions must be in accordance with CSA Standard C22 1 Canadian Electrical Code Part 1 and applicablelocal codes 4 When horizontal return is used install external field Refer to unit wiring diagram PP supplied air filter s in return air ductwork where it is iji easily accessible for service Recommended filter sizes 2 A unit disconnect switch is required within sight from are shown in Table 1 theunit The disconnect switch may be mounted on the unit corner post When mounting disconnect switch be Sizeall ductwork for maximum required airflow either sure the du rating plate is 3 Useonly copper conductor for connections between field supplied electrical disconnect switch and unit The use Adequately insulate and weatherproof all ductwork of aluminum wire is not recommended Maximum wire located outdoors Insulate ducts passing through un size is number 2 AWG American Wire Gage on units conditioned space and use vapor barrier in accordance without heat The maximum wire sizeis number 2 0 AWG with latest issue of SMACNA Sheet Metal and Air Con on units with heat ditioning Contractors National Ass
28. 0 COMPRESSOR ACCESS COVER CORNER 1 11 7167 6522 are in millimeters Direction of airflow Ductwork to be attached to accessory roof curb only Minimum clearance local codes or jurisdiction may prevail a Bottom of basepan to combustible surfaces when not using curb 0 inches On horizontal discharge units with electric heat 1 in clearance to ductwork for 1 foot b Condenser coil for proper airflow 36 in one side 12 in the other The side getting the greater clearance is optional Overhead 60 in to assure proper condenser fan operation Between units control box side 42 in per National Electrical Code NEC Between unit and ungrounded surfaces control box side 36 in per NEC Between unit and block or concrete walls and other grounded surfaces control box side 42 in per NEC Horizontal supply and return end 0 inches Tooo g With the exception of the clearances as stated in Notes 5a b and c a removable fence or barricade requires no clearance Units may be installed on combustible floors made from wood or class A B or C roof covering material CONNECTION SIZES 11 dia 28 6 field power supply hole 34 14 NPT condensate drain 138 dia 35 power supply knockout D 2 dia 50 8 power supply knockout 07 4 1 2 oa CHANNEL FOR 24V CONTROL WIRING 1 4 3 87 416 _ 787 0 3 3 15 38 E
29. 29 75 8 87 5 100 12511 129 129 100 100 13 6 15 6 100 100 A 18 1 20 9 100 100 CUN 208 230 3 60 254 15 4 1 4 101 101 13 6 15 6 101 101 18 1 20 9 101 101 33 4 38 5 6 101 101 43 8 50 5 101 101 1 208 230 1 60 o e 3 1 1 1 1 D 1 1 460 3 60 10 Table 2 Electrical Data Cont NOMINAL RANGE orw iru ELECTRIC HEAT POWER SUPPLY DISCONNECT uo in Mex ALA LRA FLA FLA Nominaikw FLA FLA LRA 60 60 42 42 159 159 23 5 27 1 60 60 42 42 159 159 31 4 36 3 60 60 43 49 159 159 46 9 54 2 70 807 61 69 159 159 62 8 72 5 i 90 10011 79 90 159 159 75 8 87 5 110 12511 94 107 159 159 60 60 45 45 162 162 23 5 27 1 60 60 45 45 162 162 31 4 36 3 60 60 46 52 162 162 46 9 54 2 5 70 8071 64 72 162 162 62 8 72 5 90 110tT 82 93 162 162 75 8 87 5 110 125tt 97 110 162 162 126 126 13 6 15 6 3 126 126 21 9 25 3 n 126 126 33 4 38 5 126 126 43 8 50 5 126 126 55 2 63 8 2 126 126 125 125 13 6 15 6 E 125 125 21 9 25 3 3 125 125 33 4 38 5 n 125 125 43 8 50 5 tt 125 125 55 2 63 8 1 125 125 208 230 1 60 208 230 3 60 460 3 60 su mace enm o ean C e Ec 8 1 191 191 9 65 13615
30. 48 frame Three phase units 2 4 bhp 56 frame TRequires an optional or accessory controls upgrade kit B MAXIMUM ALLOWABLE DIFFERENCE Fig 5 Unit Leveling Tolerances IV FIELD CONNECTIONS A External Trap Condensate Drain The unit s 3 condensate drain connections are located on the bottom and side of the unit Unit discharge connec tions do not determine the use of drain connections either drain connection can be used with vertical or horizontal applications When using the standard side drain connection make sure the plug in the alternate bottom connection is tight before in stalling the unit 36 54 914 1371 SEE DETAIL SECURE ALL SEAL STRIPS BEFORE PLACING UNIT ON ROOF CURB DUCT END To use the bottom drain connection for a roof curb installa tion relocate the factory installed plug from the bottom con nection to the side connection See Fig 7 The piping for the condensate drain and external trap can be completed after the unit is in place units must have an external trap for condensate drain age Install a trap at least 4 in deep and protect against freeze up SeeFig 8 If drain lineis installed downstream from the external trap pitch the line away from the unit at 1 in per 10 ft of run Do not use a pipe size smaller than the unit connection B Field Duct Connections NOTE The design and installation of the duct system mu
31. 6 36 1 36 191 191 meno 8 21 0 438 505 612 69 191 191 9 26 5 552638 75 6 86 191 191 7 460 3 60 2 i 7 0 sup sew p ar or ee pe IMPORTANT Optional alternate evaporator fan motor and drive not available for 558D072 units Contact your local representative for more information about field Voltage Imbalance max voltage deviation from average voltage installed motors 100 x LEGEND average voltage COMPR Compressor Example Supply voltage is 460 3 60 FLA Full Load 452v HACR Heating Air Conditioning and Refrigeration A 464 v IFM Indoor Evaporator Fan Motor AC 455 v LRA Locked Rotor Amps L dio adea Minimum Circuit Amps C US MOCP Maximum Overcurrent Protection Average Voltage LEM NEC National Electrical Code OFM Outdoor Condenser Fan Motor _ 1871 RLA Rated Load Amps Ku 457 Available for field installed accessory heaters only Heater capacity KW is based on NOTE The 575 v units are Canada only heater voltage of 208 v 240 v or 480 v If power distribution voltage to unit varies from Determine maximum deviation from average voltage rated heater voltage heater kW will vary accordingly TFuse or HACR circuit breaker Used to determine minimum disconnect per NEC ttFusing single point box provides the required branch circuit protection are based
32. Contact your distributor to verify 4 To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 66 Table 15 5580048 Air Delivery Horizontal Discharge Units Alternate Motor ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 0 1 0 2 0 3 0 4 0 6 0 7 0 8 1 0 Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts 441 494 546 609 672 746 820 904 988 1088 ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg cm gt 4 Rpm Watts Watts Rpm Watts Rpm Watts Rpm E UIS 1090 858 1121 832 1159 918 1193 976 1118 971 NOTES 1 Boldface indicates a field supplied drive is required See Note 7 indicates field supplied motor and drive are required indicates maximum usable watts of a factory supplied motor Maximum usable watts input is 1000 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Use of a field supplied motor may affect wire sizing Contact your distributor to verify Al
33. E KILOPASCALS SUCTION LINE TEMPERATURE F 4 10 16 21 SUCTION LINE TEMPERATURE C Fig 43 Cooling Charging Chart 558D072 TROUBLESHOOTING Refer to Tables 19 21 and Fig 44 for Troubleshooting information Table 19 Cooling Troubleshooting PROBLEM CAUSE REMEDY Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective thermostat contactor transformer or Compressor and control relay Replace component condenser fan will not start Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly Lower thermostat setting below room Faulty wiring or loose connections in compressor Check wiring and repair or replace Compressor motor burned out seized internal Compressor will not start pas open Determine cause Replace compressor but condenser fan runs Defective run start capacitor overload start relay Determine cause and replace Replace fuse or reset circuit breaker Insufficient line voltage Determine cause and correct Compressor cycles other than normally satisfying thermostat Compressor operates continuously Leaking valves in compressor Replace compressor Recover refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil or remove restriction Dirty air filter Replace filter
34. N Complete the required procedures given in the Pre Start U p section on page 17 before starting the unit Do not jumper any safety devices when operating the unit Do not operate the compressor when the outdoor tem perature is below 25 F unless accessory low ambient kit is installed Do not rapid cycle the compressor Allow 5 minutes be tween on cydes to prevent compressor damage A Checking Cooling Control Operation Start and check the unit for proper cooling control operation as follows 1 Place room thermostat SYSTEM switch in OFF posi tion Observe that blower motor starts when FAN switch is placed in ON position and shuts down when FAN switch is placed in AUTO position 2 PlaceSYSTEM switch in COOL position and FAN switch in AUTO position Set cooling control below room tem perature Observe that compressor condenser fan mo tor and evaporator fan motor start Observe that cool ing cyde shuts down when control setting is satisfied 3 When using an auto changeover room thermostat place both SYSTEM and FAN switches in AUTO positions Observe that unit operates in Heating mode when tem perature control is set above room temperature and op erates in Cooling mode when temperature control is set below room temperature B Checking and Adjusting Refrigerant Charge The refrigerant system is fully charged with R 22 refriger ant tested and factory sealed NOTE Adjustment of the refrigerant charge is not
35. Table 1 and Fig 6 for ad ditional information Operating weight and maximum weight are shown in Table 1 and Fig 6 Lifting holes are provided in base rails as shown in Fig 6 Refer to rigging instructions on unit IMPORTANT If unit has forklift protection skids be sure to remove forklift protection skids from under unit before set ting unit in place A properly positioned unit will have the following clearances between unit and roof curb Y4 in clearance between roof curb and base rails on each side and front of unit 19532 dear ance between roof curb and rear of unit See Fig 4 Views A A and C C After unit is in position remove shipping materials and rig ging skids ROOF CURB CRRFCURB001A00 356 527 5580036 072 CRRFCURB002A00 2 unr size o oats Ae 2174s 16 1 558036 072 51 406 144 5 NOTES N O ORON Roof curb accessory is shipped unassembled Insulated panels Dimensions in are in millimeters Roof curb galvanized steel Attach ductwork to curb Flanges of duct rest on Curb Service clearance 4 ft on each side E Direction of airflow Power Control Connector Package Accessory CRBTMPWRO001A00 9 NPT NPT THRU THE BOTTOM F E CRBTMPWRO002A00 ANPI THRU THE BOTTOM SUPPLY AIR 13 7716 OPENING I 7 16 111 19 13 167 BOLT HEADS 5041 y 761 7 16 AA UD 19141 BOLT HEADS RETURN AIR OPENING
36. Table 1 for speed change for each full turn of pulley flange To align fan and motor pulleys Fig 34 Belt Drive Motor Mounting 1 Loosen fan pulley setscrews ae 2 Slide fan pulley along fan shaft PSS 3 Make angular alignment by loosening motor from MOVABLE BE PARALLEL FLANGE WITH BELT MOTOR AND FAN mounting To adjust belt tension SHAFTS MUST BE PARALLEL SETSCREWS 1 Loosen fan motor nuts 2 Slide motor mounting plate away from fan scroll for proper PULLEYS Fig 35 Evaporator Fan Pulley Adjustment belt tension gt deflection with one finger 3 Tighten motor mounting nuts 4 Adjust lock bolt and nut on mounting plate to secure motor in fixed position FIXED FLANGE SINGLE GROOVE C Ventilation Sequence If unit is equipped with economizer the damper will open to the minimum position whenever the evaporator fan runs Whenever the evaporator fan is energized during heating cooling or continuous fan 24 v power is on terminal IFO on the economizer or two position damper control board The damper motor will be energized with 12 vdc power and the damper will drive open until SW3 on the damper is deacti vated The damper motor will stop and damper will remain in the minimum ventilation position until the evaporator fan is shut off When the evaporator fan is shut off the damper motor is again energized and the damper run
37. amper will spring return to the full dosed position Additional information on economizer operation is provided in the Ventilation Sequence section on page 27 Time Guard I Device If the unit is equipped with accessory Time Guard recycle timer theunit will delay 5 minutes between compressor starts Controls Kit Loss of Charge Low Pressure Switch LPS When the lig uid line pressure drops below 7 psig the LPS opens 24 v power to the compressor contactor and stops the compressor When the pressure reaches 22 psig the switch resets and the com pressor is allowed to come back on High Pressure Switch HPS When the refrigerant high side pressure reaches 428 psig the HPS opens 24 v power to the compressor contactor and stops the compressor When the pressure drops to 320 psig the switch resets and the com pressor is allowed to restart Freeze Protection Thermostat F PT When the evaporator coil leaving refrigerant temperature drops below 30 F theFPT opens 24 v power to the compressor contactor and stops the compressor When the leaving refrigerant temperature warms to 45 F the switch resets and the compressor is allowed to restart Ill INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTS A CAUTION For cooling operation the recommended airflow is 300 to 500 cfm per each 12 000 Btuh of rated cooling capacity For heating operation the airflow must produce a temperature rise that falls within the range stamped o
38. ary 6 Check and clean outdoor air inlet screen if needed A WARNING Failure to follow these warnings could re sult in serious personal injury 1 Turn off electrical power to the unit before per forming any maintenance or service on the unit 2 Use extreme caution when removing panels and parts As with any mechanical equipment per sonal injury can result from sharp edges etc 3 Never place anything combustible either on or in contact with the unit AIR FILTER NCAUTION Never operate the unit without a suit able air filter in the return air duct system Always re place the filter with the same dimensional size and type as originally installed See Table 1 for recommended fil ter sizes Inspect air filters at least once each month and replace throwaway type or clean cleanable type at least twice dur ing each heating and cooling season or whenever the filter s becomes dogged with dust and lint When necessary replace filters with the same dimensional size and type as originally provided SERVICE CAUTION When servicing unit shut off all electri cal power to unit to avoid shock hazard or injury from rotating parts I CLEANING Inspect unit interior at the beginning of each heating and cool ing season and as operating conditions require A Evaporator Coil 1 Turn unit power off Remove evaporator coil access panel 2 If accessory economizer is installed remove economizer by disconnecting M o
39. ce knob supplied with economizer on OAT See Fig 25 Set for 3 F below indoor room thermostat set ting If accessory enthalpy control EC is used in place of OAT see instructions shipped with EC for installa tion and adjustment see Fig 25 11 Connect OAT per Fig 26 CONTROL BOX PANEL lt lt Nefo SS 2 2 2273 lt gt FILTER OUTDOOR AIR COMPRESSOR ACCESS OPENING PANEL ACCESS PANEL PANEL Fig 19 Typical Access Panel Locations SCREEN SEAL STRIP RETAINER HOOD TOP N HOOD SIDE SEAL STRIP PLATE SCREEN TRACKS HOOD SIDE PLATE OUTDOOR AIR INLET SCREEN OUTDOOR AIR HOOD UNASSEMBLED TRACKS FOR AIR INLET SCREEN HOOD SIDES AND TOP ASSEMBLED Fig 20 Outdoor Air Hood Details 12 Slide outdoor air inlet screen into screen track on hood side plate While holding screen in place fasten screen retainer to hood using screws provided NOTE Refer to Fig 27 for economizer barometric relief damper characteristics G Optional PARABLADE Economizer The optional PARABLADE economizer hood assembly is pack aged and shipped in the filter section Damper blades and control boards are installed at the factory and the econo mizer is shipped in the vertical discharge position NOTE Horizontal discharge block off plate is shipped with the air hood package The PARABLADE economizer can only be used for vertical discharge applications Discard this plate
40. e If suction temperature is high add refrigerant If suction temperature is low carefully re cover some of the charge Recheck the suction pressure as charge is adjusted Example Fig 42 Outdoor Temperature 85F Suction Pressure 80 psig Suction Temperature should be 68 F Suction Temperature may vary 5 F D Refrigerant Leaks Proceed as follows to repair a refrigerant leak and to charge the unit 1 Locate leak and ensure that refrigerant system pres sure has been relieved 2 Repair leak following accepted practices NOTE Install a filter drier whenever the system has been opened for repair 3 Add a small charge of R 22 refrigerant vapor to system and leak test unit 4 Evacuate refrigerant system if additional leaks are not found 5 Charge unit with R 22 refrigerant using a volumetric charging cylinder or accurate scale Refer to unit rating platefor required charge Be sure to add extra refriger ant to compensate for internal volume of filter drier V REPLACEMENT PARTS A complete list of replacement parts may be obtained from your distributor upon request OUTLET GRILLE EET E 2 3 4 MAX CONDENSER FAN MOTOR CONDENSER FAN Fig 39 Condenser Fan Adjustment 30 N d lt o N lt a 5 gt Uu a a 2 e
41. e 4 2 Maximum usable watts input is 1000 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Alternate motor drive range 760 to 1090 rpm other rpms require field supplied drive To convert watts to bhp bhp watts input x motor efficiency 746 ako Motor efficiency 75 24 Table 14 558D0468 Air Delivery Horizontal Discharge Units Standard Motor STANDARD DIRECT DRIVE MOTOR AIRFLOW Low Speed High Speed Cfm 208 v 230 460 575 v 208 v 230 460 575 v ESP Watts Watts Watts Watts LEGEND ESP External Static Pressure in wg NOTES 1 Values include losses for filters unit casing and wet coils 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 3 Use of a field supplied motor may affect wire sizing
42. e discharge pres sure does not rise to normal levels 1 Note that the evaporator fan is probably also rotating in the wrong direction 2 Turn off power to the unit 3 Reverse any two of the unit power leads 4 Reapply power to the compressor The suction and discharge pressure levels should now move to their normal start up levels NOTE When the compressor is rotating in the wrong direc tion the unit makes an elevated level of noise and does not provide cooling E Cooling Sequence of Operation Without E conomizer Room thermostat calls for cooling Circuit doses between 24 v control circuit terminals R and Y 1and terminals R and G Power to terminal R is supplied through the 24 v trans former transformer is internally protected against over load Terminal G energizes the indoor evaporator fan con tactor IF C through normally closed contacts and of the time delay relay TDR and the evaporator fan starts The 24 v power through terminal Y 1 energizes the compres sor contactor C starting the compressor and condenser fan When the thermostat is satisfied C1 is deenergized and the compressor and OFM shut off After a 30 second delay on 036 060 units the IFM shuts off If the thermostat fan selec tor switch is in the ON position the evaporator motor will run continuously Cooling Units with Durablade E conomizer When the outdoor air temperature is above the outdoor air thermostat OAT setting a
43. e wired correctly and working properly see unit label diagram 3 Check to ensure that 24 vac exists at PL6 2 blue wire If 24 vac is not present check wiring see unit wiring label diagram 4 Check 24 vac output at PL6 10 white wire If 24 vac is not present replace economizer control board Check SAT 1 After verifying that the OAT and EC settings and the economizer control board wiring are correct check to ensure that the 24 vac terminal of the SAT has 24 vac white wire If OAT EC and control board are functioning and wired properly and no 24 vac exists check wiring see unit label diagram 2 If supply air temperature is greater than 57 F 24 vac should be found at terminal T2 on the SAT pink wire If 24 vac is not present replace SAT Damper does not Incorrect wiring of 1 Verify that SW2 and SWA are wired and working properly see unit label close economizer diagram 2 Check diode D19 If diode is not functioning properly replace D19 Verify economizer control 1 After verifying that the wiring is correct modulate the damper to the mini board is functioning properly mum position Remove the calls for G 2 If the damper does not move check for 24 vac at PL6 1 red wire If 24 vac is not present check wiring see unit label diagram 3 If damper still does not move check for 24 vac at blue terminal of econo mizer control board blue wire If 24 vac is not present replace the econo mizer circuit board C
44. ecting tubing with tubing cutter and remove component from unit c Carefully unsweat remaining tubing stubs when necessary Oil can ignite when exposed to torch flame Proceed as follows to inspect and prepare the unit for initial start up 1 Remove all access panels 2 Read and follow instructions on all WARNING CAU TION and INFORMATION labels attached to or shi pped with unit 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts disconnected wires etc b Inspect for oil at all refrigerant tubing connections and on unit base Detecting oil generally indicates a refrigerant leak L eak test all refrigerant tubing con nections using electronic leak detector halide torch or liquid soap solution If refrigerant leak is de tected see Refrigerant Leaks section on page 30 c Inspect all field and factory wiring connections Be sure that connections are completed and tight d Inspect coil fins If damaged during shipping and han dling carefully straighten fins with a fin comb 4 Verify the following conditions a Make sure that condenser fan blade is positioned cor rectly in fan orifice Blades should clear fan motor and fan orifice ring b Make sure that air filters are in place c Make sure that condensate drain pan and trap are filled with water to ensure proper drainage d Make surethat all tools and miscellaneous loose parts have been removed
45. eld supplied drive is required See Note 7 indicates field supplied motor and drive are required indicates maximum usable watts of a factory supplied motor Maximum usable watts input is 1000 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Use of a field supplied motor may affect wire sizing Contact your distributor to verify Alternate motor drive range 760 to 1090 rpm All other rpms require field supplied drive To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 75 RON Table 7 5580048 Air Delivery Vertical Discharge Units Standard Motor STANDARD DIRECT DRIVE MOTOR AIRFLOW Low Speed High Speed Ctm ESP Wais EsP ESP Wars Wans LEGEND ESP External Static Pressure in wg NOTES 1 Values include losses for filters unit casing and wet coils 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in n
46. er Installed HOOD TOP SCREWS HIDDEN N SCREWS SCREEN HOLDERS HOOD SIDES AND TOP ASSEMBLED oo HOOD SCREEN LOCATION SCREEN 9 NOT SHOWN ze Fig 17 Manual Outdoor Air Damper With Hood Attached 06 0 5 NEGATIVE PRESSURE wg o o w 0 1 0 0 1 2 3 4 5 6 7 OUTDOOR AIRFLOW cfm x 100 Fig 18 Position Setting F Optional Durablade Economizer The optional economizer hood assembly is packaged and shi pped in the filter section Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical position NOTE Horizontal discharge block off plate is shipped with the air hood package If unit is to be used for vertical dis charge application discard this plate Assembly 1 Determine if ventilation air is required for building If so determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 6 2 Removefilter access panel by raising panel and s wing ing panel outward Panel is now disengaged from track and can be removed No tools are required to remove filter access panel Remove outdoor air opening panel Save panels and screws See Fig 19 Remove optional outdoor air damper hood package from filter section 3 Assemble outdoor air hood top and side plates as shown in Fig 20 Install seal strips on hood top and sides Put aside screen retaine
47. he LED should turn on indicating low enthalpy The motor should drive towards open If LED does not light replace module If motor does not drive open check motor operation Turn the enthalpy set point to D The LED should turn off indicating high enthalpy The motor should drive towards closed If these actions do not oc cur replace module Disconnect 1 2 Kohm checkout resistor before resuming operation Damper does not No power to economizer Disconnect power at TR and TR1 Disconnect jumper across P and P1 close Connect jumper across TR and 1 Connect jumper across T1 and T If connected remove enthalpy sensor from terminals Sg and Factory installed 620 ohm resistor should be connected to terminals Sg and Apply power 24 vac to terminals TR and TR1 The LED should be off and the damper should be in the closed position Disconnect the factory installed 620 ohm resistor from terminals and The LED should light up and the motor should drive towards open If this does not happen replace the economizer control module Spring return failure If power to unit is off and damper does not close check for a bound linkage If linkage is not bound then internal spring may be broken Replace actuator Economizer motor failure If the economizer control module is functioning properly verify that there is a minimum of 24 vac at terminals TR and TR1 If the motor is not operating re place the motor Damper does
48. heck SAT 1 After verifying that the wiring is correct and the economizer control board is functioning properly place the OAT or EC switch in the closed position Place a call for Y1 and open the damper to the fully open position Confirm that the 24 vac terminal of the SAT has 24 vac white wire If 24 vac is not present check wiring see unit label diagram 2 f supply air temperature is less than 52 F 24 vac should be found at terminal T1 on the SAT violet wire If 24 vac not found replace SAT Economizer motor failure If economizer control board and SAT are functioning properly verify that there is a minimum of 18 vdc at the positive motor terminal If a minimum of 18 vdc is present and the motor is still not operating replace the motor Economizer Verify that close on power 1 Check voltage potential across batteries If lower than 14 vdc replace close damper does not loss and economizer control on power loss power supply 9 v alkaline batteries It is recommended that close on power board are functioning you check this emergency power supply on a regular basis or whenever the loss properly filters are changed If the close on power loss and economizer control board are functioning properly check for 14 vdc or higher at the blue terminal of the economizer control board blue wire when power is disconnected from unit If 14 vdc is not present replace the control board LEGEND C1 Common Power EC Enthalpy Cont
49. icates a field supplied drive is required See Note 7 indicates field supplied motor and drive are required indicates maximum usable watts of a factory supplied motor Maximum usable watts input is 2120 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Values include losses for filters unit casing and wet coils Use of a field supplied motor may affect wire sizing Contact your distributor to verify Alternate motor drive range 900 to 1300 other rpms require field supplied drive To convert watts to bhp watts input x motor efficiency 746 bhp Motor efficiency 74 26 Table 18 558D072 Air Delivery Horizontal Discharge Units Standard Motor STANDARD BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 01 o2 os oe J 10 12 14 t6 Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Cfm 1446 2188 1413 2154 1476 2352 1382 2136 1444 2317 1506 2529 NOTES 1 Boldface indicates field supplied drive required See Note 7
50. ing device lo cated in the coil header There is one orifice in each coil cuit The size of the orifice is stamped on the outside of the tube where the orifice is located Orifices are factory selected for optimum performance and are not designed to be changed in the field To determine if an orifice is plugged disconnect power to the evaporator fan motor and start the unit in Cool ing mode Observe the coil for an uneven frost pattern indi cating a plugged orifice A No Charge Use standard evacuating techniques After evacuating sys tem weigh the specified amount of refrigerant Refer to Table 1 B Low Charge Cooling Using Cooling Charging Charts Fig 40 43 vary refrigerant until the conditions of the appropriate chart are met Note the charging charts are different from type normally used Charts are based on charging the units to the correct super heat for the various operating conditions Accurate pressure gage and temperature sensing device are required Connect the pressure gagetothe service port on the suction line Mount the temperature sensing device on the suction line and insu late it so that outdoor ambient temperature does not affect the reading ndoor air cfm must be within the normal oper ating range of the unit C To Use Cooling Charging Charts Take the outdoor ambient temperature and read the suction pressure gage Refer to appropriate chart to determine what suction temperature should b
51. installation start up and service instructions SINGLE PACKAGE ROOFTOP 558D Sizes 036 072 3 to 6 Tons ELECTRIC HEATING ELECTRIC COOLING UNITS IMPORTANT READ BEFORE INSTALLING 1 Read and become familiar with these installation in structions before installing this unit see Fig 1 2 Besurethe installation conforms to all applicable local and national codes 3 Theseinstructions contain important information for the proper maintenance and repair of this equipment Re tain these instructions for future use CONTENTS Page SAFETY CONSIDERATIONS 1 INSTALLATION 1 16 1 Locate the 3 Unit Duct Connections 3 Rig and Place 3 IV Field Connections 6 5 17 START UP 17 28 1 Heating Section Start Up and Adjustments 17 Il Cooling Section Start Up and Adjustments 18 Indoor Airflow and Airflow Adjustments 19 CARE AND MAINTENANCE 28 l Air 28 SERVICE one Raub RR 28 31 1 Cleaning 28 Il Lubrication 29 Ill Condenser Fan Adjustment 29 IV Refrigerant 30 V Replacement
52. itions Diode Sr Quadruple Terminal 3 Thermostat E Enthalpy Contro Relay Terminal Unmarked HHO07AT170 172 174 amp P272 2783 ECON Economizer SAT Supply Air Thermostat Subbase EPS Emergency Power Supply SEN Sensor Terminal Block HH93AZ176 178 amp 272 1882 1883 Nine Volt Battery SW1 Switch Fully Open 4 Set heat anticipator at 1 amp ERE Economizer Relay Ss Switch VEA AS i Splice 5 Use copper conductors only Freeze Up Protection Thermostat Switc in Vent Position FU Fuse Sw4 Switch Max Vent Position Splice Marked 6 Use copper copper clad aluminum or aluminum conductors GND Ground TB Terminal Block F Wiri HC Heater Contactor Strip Heat TC Thermostat Cooling Factory Wiring HPS High Pressure Switch TDR Time Delay Relay Field Control Wiring IFC Indoor Fan Contactor TEN Thome Sa Healing emm Field Power Wiring Ee EH eas MAD STOP nen Accessory or Optional Wiring To indicate common potential only Not to represent wiring Fig 44 Typical Wiring Schematic SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual including Unit Familiarization Maintenance Installation Overview Operating Sequence A large selection of product theory and skills programs are available using popula
53. lex plug and economizer mounting screws Refer to Optional Economizer sections on page 13 or Accessory Economizer Installation Instruc tions for further details 3 Slide filters out of unit 4 Clean coil using a commercial coil cleaner or dish washer detergent in a pressurized spray canister Wash both sides of coil and flush with clean water For best results backflush toward return air section to remove foreign material Flush condensate pan Reinstall economizer and filters Reconnect wiring Replace access panels B Condenser Coil Inspect coil monthly Clean condenser coil annually and as required by location or outdoor air conditions One Row Coils sizes 036 060 To access one row coils remove screws securing condenser fan grille to condenser coil top cover Place grille on top of condenser coil top cover as shown in Fig 36 It is not neces sary to remove the top cover Use a water hose or other suitable equipment to remove dirt and debris Clean the outer surfaces with a stiff brush in the normal manner Reversethe procedure outlined above to reinstall the condenser fan grille and condenser coil top cover 28 AU W 22 4 I SS 1 EN 4 CONDENSER FAN Fig 36 Condenser Coil Cleaning Two Row Coils size 072 NOTE Save all screws removed in this section The screws must
54. livery Horizontal Discharge Units Standard Motor STANDARD DIRECT DRIVE MOTOR AIRFLOW 208v 230465 575v 28v 2 0 460 575 ese Was Esp wans Was EsP wats LEGEND ESP External Static Pressure in wg NOTES 1 Values include losses for filters unit casing and wet coils 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 Use of a field supplied motor may affect wire sizing Contact your distributor to verify To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 63 Table 13 5580036 Air Delivery Horizontal Discharge Units Alternate Motor ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg o2 os o7 o8 Warts Rem Warts Rem Watts Rem Watts Rem Watts Rem Watts Watts mpm Watts ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg Cfm 22082252442 WEE ue edes 1 Watts Rpm Watts Rpm Watts Rpm Watts NOTES 1 Boldface indicates a field supplied drive is required See Not
55. low voltage connections located inside low voltage access panel See Fig 10 11 and 13 for connections The barrier provides theUL required dear ance between high and low voltage wiring NOTE If thru the bottom power connections are used refer to the accessory installation instructions for information on power wiring Refer to Fig 2 for drilling holes basepan WIRE CONNECTIONS TO LOW VOLTAGE SECTION TYPICAL THERMOSTAT CONNECTION BOARD LEGEND AHA Adjustable Heat Anticipator TH Thermostat Heating CC Cooling Compensator Field Wiring TC Thermostat Cooling Factory Wiring NOTES 1 The Y2 wiring is connected when an economizer is used 2 Connect W1 when unit is equipped with an accessory 1 module heater package The W2 wiring is connected when unit is equipped with an accessory 2 module heater package Fig 11 Low Voltage Connections 1 4 5 ONLY LEGEND COMPONENT ARRANGEMENT P TON ONEY Contactor CAP Capacitor o GND Ground IFC Indoor Evaporator Fan Contactor dap IFR Indoor Evaporator Fan Relay NEC National Electrical Code OFC Outdoor Condenser Fan Contactor TB Terminal Block TDR Time Delay Relay TRAN Transformer CONNECTION BOARD TON ONLY 3 4 5 TON ONLY 182 FACTORY SUPPLIED PIGTAILS FIELD FIELD I IWIRING SPLICE EM ir HE iad Fig 10
56. n the unit rating plate Adjust evaporator fan speed to meet jobsite conditions Table 3 shows fan rpm at motor pulley settings Table 4 shows maximum amp draw of belt drive motor Refer to Tables 5 18 to determine fan speed settings A Direct Drive Motors The evaporator fan motor factory speed setting is shown on label diagram affixed to base unit If other than factory set ting is desired refer tolabel diagram for motor reconnection Table 3 Fan Rpm at Motor Pulley Settings UNIT ea o 1 m 2 m 3 m 4 m 5 036 1090 1055 1025 990 35 1300 1260 1220 meo 140 moo 3060 1020 980 940 900 Approximate fan rpm shown TIndicates alternate motor and drive package Indicates standard motor and drive package 19 Table 4 Motor Data 558D MOTOR VOLTAGE WATTS DRAW 2087250 0 E E 1000 pu 23 E M 75 850 208 230 cu REER 575 23 2082 62 1 20 1340 460 3 4 13 1750 20g230t 76 208 280 61 24 2120 460 27 LEGEND 208 80 61 Bhp Brake Horsepower Extensive motor and electrical testing on these units ensures that the full range of the motors can be utilized with confidence Using your fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure Unit warranty will not be affected TSingle Phase motor
57. nd the room thermostat calls for cooling compressor contactor is energized to start compres sor and the outdoor condenser fan motor OF M Theindoor evaporator fan motor IF M is energied and the economizer damper moves to the minimum position After the thermo stat is satisfied there is a 30 second delay before the evapo rator fan turns off The damper then moves to the fully closed position When using continuous fan the damper moves to the minimum position When the outdoor air temperature is below the OAT setting and the thermostat calls for cooling the economizer damper moves to the minimum position If the supply air tempera tureis above 57 F the damper continues to open until it reaches the fully open position or until the supply air temperature drops below 52 F When the suppl y air temperature falls to between 57 52 F the damper will remain at an intermediate open posi tion If the supply air temperature falls below 52 F the damper will modulate dosed until it reaches the minimum position or until the supply air temperature is above 52 F When the thermostat is satisfied the damper moves to the fully closed position when using AUTO fan or to the minimum position when using a continuous fan If the outdoor air alone cannot satisfy the cooling require ments of the conditioned space economizer cooling is inte grated with mechanical cooling providing two stages of cool ing The compressor and the condenser
58. nel is now disengaged from track and can be removed No tools are required to remove fil ter access panel Remove and save outdoor air opening panel and screws See Fig 15 Separate hood and screen from basepan by removing the 4 screws and brackets securing them Save all screws and discard brackets Replace outdoor air opening panel Place hood on front of outdoor air opening panel See Fig 16 for hood details Secure top of hood with the 4 screws removed in Step 3 See Fig 17 Remove and save 6 screws 3 on each side from sides of the manual outdoor air damper assembly Align screw holes on hood with screw holes on side of manual outdoor air damper assembly See Fig 16 and 17 Secure hood with 6 screws from Step 6 For proper quantity of ventilation air adjust minimum position setting of the damper blade by adjusting the manual outdoor air adjustment screws on the front of the damper blade SeeF ig 15 Slide blade vertically un til it is in the appropriate position determined by Fig 18 Tighten screws Remove and save 4 screws currently on sides of hood Insert screen Secure screen to hood using the 4 screws See Fig 17 MANUAL OUTDOOR AIR ADJUSTMENT oi o o SCREWS 9 ol Y 7 9 DAMPER BLADE Fig 15 Damper Panel With Outdoor Air Damp
59. ociation 54 TIA 54 84 1 Refer to Provincial and local plumbing or wastewater codes and other applicable local codes 5 Approved for outdoor installation on wood flooring or on class A B or C roof covering materials INSTALLATION Unit is shipped in the vertical airflow configuration see Fig 1 To convert to horizontal discharge remove horizontal duct opening covers Using the same screws install covers with insulation side down facing outside over vertical duct openings on the unit Seals around duct openings must be tight All units can be connected into existing duct systems that are properly sized and designed to handle an airflow of 300 to 500 cfm per each 12 000 Btuh of rated cooling capacity NOTE When installing any accessory item see the manu facturer s installation instructions packaged with the acces sory A qualified installer or agency must use only factory authorized kits or accessories when modifying this unit Fig 1 Typical Unit Indicates horizontal center of gravity TIndicates vertical center of gravity NOTES 1 Dimensions in e Center of gravity 2 CONTROL BOX ACCESS PANEL 3 4 5 2031 33 5 16 abis 846 5 BOTTOM mE 6 7 41 3 16 d 1046 2 9 16 e UER T 2 OUTDOOR AIR REAR FILTER ECONOMIZER ACCESS PANEL CONOENSER COIL 2 27 0 15 16 533 ECONOMIZER 00
60. ociation and ACCA ir A e 4 Insulate low voltage wires for highest voltage con Air Conditioning Contractors National Association mini UE mum installation standards for heating and air condi nm RE HE 22 SE tioning systems Secure all ducts to building structure 9 9 2 5 Donot damage internal components when drilling through A minimum clearance to combustibles is not required around ductwork on vertical discharge units On hori zontal discharge units a minimum clearance of one in is required for the first 12 in of ductwork Flash weatherproof and vibration isolate all openings in building structure accordance with local codes and good building practices any panel to mount electrical hardware conduit etc High Voltage Connections Fig 10 Theunit must have a separate electrical service with a field supplied waterproof fused disconnect switch mounted at or within sight of the unit Refer to the unit rating plate for maximum fuse circuit breaker size and minimum circuit amps ampacity for wire sizing Be sure disconnect switch does not obstruct unit rating plate The field supplied disconnect switch box may be mounted on the unit s end panel or on the corner post Mount disconnect box on the left side of the rating plate when mounting on the unit s end panel Do not mount the disconnect box over the unit rating plate When mounting disconnect box on corner post secure disconnect box to co
61. or use in Step 5 2 Remove filter access panel by raising panel and swing ing panel outward Panel is now disengaged from track and can be removed No tools are required to remove filter access panel Remove outdoor air opening panel Save panels and screws See Fig 19 3 Assemble outdoor air hood top and side plates as shown in Fig 20 Install seal strips on hoop top and sides Put aside screen retainer and retainer screw for later assembly Do not attach hood to unit at this time 4 Insert economizer plug into economizer harness Re move tape from barometric relief damper See Fig 28 5 If ventilation is not required proceed to Step 6 If ven tilation air is required perform the following a Make sure the factory installed jumper is in place across terminals P and P1 on the economizer logic module T and T1 should be disconnected during adjustment b The 2 potentiometers with slots for adjustment are located on the face of the economizer logic module Turn the lower potentiometer fully clockwise The dampers should be fully closed Turn the potenti ometer gradually counterclockwise until the de sired position is reached c Connect T and T1 to the 24V power supply DOOR THERMOSTAT OR_ACCESSORY Pu ENTHALPY CONTROL TERMINALS OUTDOOR AIR THERMOSTAT TERMINALS ARE UP ENTHALPY CONTROL HOOD Fig 25 Outdoor Air Thermostat Enthalpy Control Installation OAT
62. ply to the unit is switched OFF before making any wiring changes Electrical shock can cause personal injury or death For operation on 208 v disconnect the transformer primary orange lead from the contactor Seethe unit wiring label Re move the tape and cover from the terminal on the end of the transformer primary red lead Save the cover Connect the red lead to the contactor terminal from which the orange lead was disconnected Using the cover removed from the red lead insulate the loose terminal on the orange lead Wrap the cover with electrical tape so that the metal terminal cannot be seen Control Voltage Connection Install a factory approved room thermostat Locate the ther mostat on an inside wall in the spaceto be conditioned where it will not be subjected to either a cooling or heating source or direct exposure to sunlight Mount the thermostat 4 to 5 ft above the floor See accessory installation instructions NOTE For wire runs up to 50 ft use number 18 AWG insu lated wire 35 C minimum For 51 to 75 ft use number 16 AWG insulated wire 35 C minimum For 76 to 150 ft use number 14 AWG insulated wire 35 C minimum All wirelarger than number 18 AWG cannot be connected directly tothe ther mostat and will require a junction box and splice at the thermostat F eed control wires through the raceway located between the condenser coil top cover and power wiring access panel See Fig 12 Connect control wires to the
63. r and retainer screw for later assembly Do not attach hood to unit at this time 4 To convert to horizontal discharge application a Rotate the economizer 90 degrees until the econo mizer motor faces the condenser section see F ig 21 b Rotate barometricrelief damper hinge 90 degrees metric relief damper should open vertically to oper ate properly c Install horizontal discharge block off plate over the opening on the access panel Block off plate MUST be installed before installing hood assembly See Fig 22 5 Insert economizer plug into economizer harness Re move tape from barometric relief damper See Fig 23 6 If ventilation air is not required proceed to Step 7 If ventilation air is required determine the minimum po sition setting for required airflow See Fig 24 Adjust minimum position setting by adjusting the screws on the position setting bracket Slide bracket until thetop screw is in the position determined by Fig 24 Tighten screws 7 Remove tape from outdoor air thermostat OAT Fas ten OAT to inside of hood using screws and speed clips provided see Fig 25 Make sure OAT terminals are positioned up 8 Replace outdoor air opening panel using screws from Step 2 Replace filter access panel Ensure the filter access panel slides along the tracks and is securely engaged 9 Fasten hood top and side plate assembly Fig 20 to outdoor air opening panel with screws provided 10 Pla
64. r video based formats and materials include video and or slides plus companion book Classroom Service Training which includes hands on experience with the products in our labs can mean increased confidence that really pays dividends in faster troubleshooting and fewer call backs Course descriptions and schedules are in our catalog CALL FOR FREE CATALOG 1 800 962 9212 Packaged Service Training 1 Classroom Service Training Copyright 1999 Bryant Heating amp Cooling Systems CATALOG NO 5355 802 1 PRELIMINARY INFORMATION MODEL NO DATE START UP CHECKLIST Remove and Store in Job File SERIAL NO TECHNICIAN Il PRE START UP insert checkmark in box as each item is completed INSTRUCTIONS INSTRUCTIONS TIGHTNESS START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 COMPRESSOR AMPS 11 INDOOR FAN AMPS L1 TEMPERATURES OUTDOOR AIR TEMPERATURE RETURN AIR TEMPERATURE COOLING SUPPLY AIR PRESSURES REFRIGERANT SUCTION REFRIGERANT DISCHARGE Copyright 1999 Bryant Heating amp Cooling Systems VERIFY THAT CONDENSATE CONNECTION IS INSTALLED AS SHOWN IN THE INSTALLATION CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK THAT INDOOR AIR FILTERS ARE CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL WITHIN TOLERANCES LISTED IN THE INSTALLATION CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW
65. rance to block walls or any other grounded sur face is 42 in on all sides Minimum dearance of 36 in should be provided on side with outdoor air intake if unit is so equipped Minimum clearance between unit and other electrically live parts is 48 inches Do not install unit in an indoor location Do not locate unit air inlets near exhaust vents or other sources of contami nated air Although unit is weatherproof guard against water from higher level runoff and overhangs Slab mounted units should be at least 4 in abovethe highest expected water flood and runoff levels Do not usethe unit if it has been under water 1 SERVICE CLEARANCE OPERATIONAL CLEARANCE Fig 3 Service and Operational Clearances B Roof Curb Mount Assemble and install accessory roof curb in accordance with instructions shipped with curb See Fig 4 Install insulation cant strips roofing felt and counter flashing as shown Duct work must be attached to curb If electric or control power is to be routed through the curb attach the accessory thru the bottom connections to the basepan in accordance with the ac cessory installation instructions Accessory electric connections must be installed before unit is in place on roof curb IMPORTANT The gasketing of the unit to the roof curb is critical for a watertight seal Install gasket with the roof curb as shown Fig 4 Improperly applied gasket can also result in air leaks and poor unit
66. required unless the unit is suspected of not having the proper R 22 charge This unit uses charging charts to determine proper charge See Refrigerant Charge section on page 30 for fur ther details C Unit Controls compressors have the following internal protection controls High PressureRdie Valve This valve internal tothe compressor opens when the pressure differential be tween thelow and high sides becomes excessive and will automatically reset when pressure returns to normal 2 Compressor Overload This overload interrupts power to the compressor when either the current or internal temperature becomes excessive and automatically re sets when the internal temperature drops to a safe level This overload may require up to 60 minutes or longer to reset therefore if the internal overload is suspected of being open disconnect the electrical power tothe unit and check the circuit through the overload with an ohm meter or continuity tester D Compressor Rotation On 3 phase units with scroll compressors it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gages to suction and discharge pres sure fittings 2 Energize the compressor 3 Thesuction pressure should drop and the discharge pres sure should rise as is normal on any start up If the suction pressure does not drop and th
67. rner post and condenser coil top cover See Fig 12 A disconnect box mounting space is available when an op tional or accessory condenser coil grille is used Mount the disconnect on the sheet metal provided with the condenser coil grille The sheet metal is located adjacent to the corner post on the left side of the power wiring access panel Install field wiring as follows 1 Connect ground lead to chassis ground connection when using separate ground wire Install conduit between disconnect and power wiring ac cess panel Insert conduit through power supply knock out opening See Fig 12 Install power lines to power wiring leads Pigtails are provided for field power connections and are located inside the power wiring access panel See Fig 11 Use factory supplied splices or Underwriters Labo ratories UL approved copper connector Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate see Table 2 On 3 phase units voltages between phases must be balanced within 2 and the current within 10 Use the for mula shown in the legend for Table 2 Note 2 to determine the percent of voltage imbalance Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate any applicable warranty Special Procedures for 208 V Operation 2 ZA DANGER Make sure that the power sup
68. rol IFC Indoor Evaporator Fan Contactor IFO Indoor Evaporator Fan On OAT Outdoor Air Thermostat PL Plug SAT Supply Air Thermostat SW Economizer Position Switch Table 21 PARABLADE Economizer Troubleshooting PROBLEM CAUSE REMEDY Damper does not Evaporator fan not on Check wiring between G on connection board and indoor evaporator fan open contactor No power to economizer 1 Disconnect power at TR and TR1 Disconnect jumper across P and P1 motor Connect jumper across TR and 1 Connect jumper across T1 and T If connected remove enthalpy sensor from terminals So and Apply power 24 vac to terminals TR and TR1 The LED should be off and the damper should be in the closed position Disconnect the factory installed 620 ohm resistor from terminals and The LED should light up and the motor should drive towards open If this does not happen replace the economizer control module Economizer motor failure If the indoor evaporator fan and economizer motor are energized verify that there is a minimum of 24 vac at terminals TR and TR1 If the motor is not oper ating replace the motor Economizer op Economizer control module 1 To simulate high or low enthalpy reconnect the factory installed 620 ohm eration limited to failure resistor across terminals S and minimum position 2 Connect 1 2 Kohm checkout resistor across terminals So and Turn the enthalpy set point to A T
69. s closed until SW2 is activated and the damper motor turns off CARE AND MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic mainte nance must be performed on this equipment This combina tion heating cooling unit should be inspected at least once each year by a qualified service person NOTE TO EQUIPMENT OWNER Consult your local dealer about the availability of a maintenance contract A WARNING The ability to properly perform mainte nanceon this equipment requires certain expertise me chanical skills tools and equipment If you do not pos sess these do not attempt to perform any maintenance on this equipment other than those procedures recom mended in the User s Information Manual FAILURE TO HEED THIS WARNING COULD RESULT IN SE RIOUS PERSONAL INJURY AND POSSIBLE DAM AGE TO THIS EQUIPMENT The minimum maintenance requirements for this equipment are as follows 1 Inspect air filters each month Clean or replace when necessary 2 Inspect cooling coil drain pan and condensate drain each cooling season for cleanliness Clean when necessary 3 Inspect fan motor and wheel Clean and lubricate as necessary 4 Check electrical connections for tightness and controls for proper operation each heating and cooling season Service when necessary 5 Check and inspect accessory electric heaters before each heating season Clean and adjust when necess
70. scharge Units Alternate Motor ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg cfm o2 o4 oe os 10 12 14 16 14 Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts 1320 1400 1380 1645 1424 1931 1480 2136 1517 2299 1544 2453 1569 2606 1423 2064 1595 2769 1392 2013 1454 2228 1622 2943 1426 2197 1485 2412 1652 3137 2166 1461 2391 1518 2606 1684 3352 NOTES 1 Boldface indicates a field supplied drive is required See Note 7 2 C indicates field supplied motor and drive are required 3 indicates maximum usable watts of a factory supplied motor 4 Maximum usable watts input is 2120 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 5 Values include losses for filters unit casing and wet coils 6 Use of a field supplied motor may affect wire sizing Contact your distributor to verify 7 Alternate motor drive range 900 to 1300 All other roms require field supplied drive 8 To convert watts to bhp watts input x motor efficiency 746
71. st accordance with NF PA standards for the installation of nonresidence type air conditioning and ventilating systems NFPA No 90A or residence type NF PA No 90B and or local codes and ordinances Adhere to the following criteria when selecting sizing and installing the duct system 1 Remove appropriate panels from unit to obtain either horizontal or vertical discharge If units are installed in horizontal discharge applications remove vertical dis charge duct covers save screws and install covers over vertical duct openings 2 Select and size ductwork supply air registers and return air grilles according to ASHRAE American Society of Heating Refrigeration and Air Conditioning Engi neers recommendations N CAUTION When drilling the duct system fastening holes into the side of the unit for duct flanges be care ful not to puncture the coil or coil tubes See Fig 9 DETAIL A MAX WEIGHT tb Kg in mm in mm 558D036 415 188 558D048 425 193 558D060 445 im mm 193 73 69 1872 3500 89 33 35 847 558D072 520 236 NOTES 1 Dimension in is in millimeters 2 Hook rigging shackles through holes in base rail as shown in detail A Holes in base rails are centered around the unit center of gravity Use wooden top skid when rigging to pre vent rigging straps from damaging unit 3 Weights do not include economizer See Table 1 for econo mizer
72. ternate motor drive range 840 to 1185 rpm All other roms require field supplied drive To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 75 ONO 25 Table 16 558D060 Air Delivery Horizontal Discharge Units Standard Motor STANDARD DIRECT DRIVE MOTOR AIRFLOW Low Speed Medium Speed High Speed Cim 7 208v 230 460 875 v 230 460 575v 208v 230 460 575 ESP Watts Watts Watts Watts Watts Watts LEGEND ESP External Static Pressure in wg NOTES 1 Values include losses for filters unit casing and wet coils 2 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be af fected For additional information on motor performance refer to Table 4 3 Use of field supplied motor may affect wire sizing Contact your distributor to verify 4 To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 67 Table 17 558D060 Air Delivery Horizontal Discharge Units Alternate Motor ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 1410 2013 1434 2156 1459 2310 1486 2483 NOTES 1 Boldface ind
73. uisance tripping or premature motor failure Unit warranty will not be affected For additional information on motor performance refer to Table 4 3 Use of a field supplied motor may affect wire sizing Contact your distributor to verify 4 To convert watts to bhp bhp watts input x motor efficiency 746 Motor efficiency 66 Table 8 5580048 Air Delivery Vertical Discharge Units Alternate Motor ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 01 o os 4 06 o7 os j 10 Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Cfm 1071 1022 1058 1037 1097 1124 1046 1053 1085 1139 1124 1237 ALTERNATE BELT DRIVE MOTOR AIRFLOW External Static Pressure in wg 14 1 4 1 6 1 8 Watts Rpm Watts Rpm Watts Rpm Watts 1096 820 1134 835 1203 885 1242 969 1101 904 1121 918 NOTES 1 Boldface indicates a field supplied drive is required See Note 7 indicates field supplied motor and drive are required indicates maximum usable watts of a factory supplied motor Maximum usable watts input is 1000 Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure Unit warranty will not be
74. utdoor air opening panel using screws from Step 2 Replace filter access panel Ensure the filter access panel slides along thetracks and is securely en gaged See Fig 30 Fasten hood top and side plate assembly Fig 31 to outdoor air opening panel with screws provided Slide outdoor air inlet screen into screen track on hood side plate While holding screen in place fasten screen retainer to hood using screws provided See Fig 32 cfm NOTE Refer to Fig 33 for PARABLADE economizer baro metric relief damper characteristics ECONOMIZER CONTROL WIRING MODULE DAMPER ENTHALPY HARNESS ACTUATOR SENSOR RELIEF DAMPER Fig 28 PARABLADE Economizer Installed in Unit CONTROL POINT F C APPROX AT 50 RH 5 100 105 110 29 5 32 35 38 40 5 43 5 CONTROL CURVE FEO X Va Oar AS CN N 5 40 45 50 55 6 9t 100 10 60 5 15 45 7 10 13 15 5 18 5 21 24 26 5 29 5 32 35 38 40 5 DRY BULB TEMPERATURE APPROXIMATE FAHRENHEIT CELSIUS RH Relative Humidity Fig 29 Enthalpy Settings for PARABLADE Economizer FILTER ACCESS PANEL OUTDOOR AIR OPENING PANEL Fig 30 Panels Reinstalled On Unit 16 PRESSURE DROP in wg

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